I applied online. I interviewed at ByteDance (Shanghai, Shanghai) in Aug 2024
Interview
The interviewer focus on interviewee's understanding on machine learning concepts from Boosting algos to Deep Learning. It would be difficult if someone didn't prepare all those conceptual detail well. However, the question list is a nice guidance for preparing interviews of similar roles.
Interview questions [1]
Question 1
1. What's the ensemble method of XGB
2. Explain key hyper-parameters of XGB
3. Bayesian Optimization on hyper-parameter tuning
4. Explain Encoder & Decoder
I applied online. I interviewed at ByteDance (Shanghai, Shanghai) in Dec 2025
Interview
First round technical interview with a senior member from the team, 45 mins equally divided into resume questions, 1 sql problem involving window function and ctes, and discussion around statistical concepts/scenarios.
HR reach out to me invite me to take a Data Scientist interview, and scheduel an interview for me. I only took one interview asking about project-related questions，and some questions about statistics, experimentation, and modeling，and one open-ended question.
Interview questions [1]
Question 1
How to estimate TikTok's daily advertising revenue without access to internal data?
Submitted application through referral link. Received recruiter phone screening within a few days. And then immediately asked for availability to schedule the 1st round technical interview with one of the team members.
Interview questions [1]
Question 1
Walk me through your resume and elaborate on what problems you solved with data and what metrics you used.
